molecular

adjective

mo·​lec·​u·​lar mə-ˈle-kyə-lər How to pronounce molecular (audio)
1
: of, relating to, consisting of, or produced by molecules
molecular oxygen
2
: of or relating to individual or small components
a molecular view of the American Civil War
molecularly adverb

Examples of molecular in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
This distinct behavior sets FCOPs apart from traditional adsorbents and shows how molecular interactions can dramatically boost performance. Neetika Walter, Interesting Engineering, 15 Oct. 2025 What started to drive me was finding the ways that patterns emerge in astrophysics, and in our sociopolitical situation, and in quantum molecular studies. Sara Holdren, Vulture, 14 Oct. 2025 Her mother, Lakshmi, is a molecular biologist at UC San Diego, and her father, Krish, a former aerospace engineer, is a lecturer at San Diego State University. Gary Robbins, San Diego Union-Tribune, 14 Oct. 2025 There’s no evidence yet that COVID-19 causes similar effects in human children, but the findings open a new area of investigation into whether severe infections could leave molecular traces in sperm that influence future generations. New Atlas, 13 Oct. 2025 See All Example Sentences for molecular

Word History

First Known Use

1770, in the meaning defined at sense 1

Time Traveler
The first known use of molecular was in 1770

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Cite this Entry

“Molecular.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/molecular. Accessed 17 Oct. 2025.

Kids Definition

molecular

adjective
mo·​lec·​u·​lar mə-ˈlek-yə-lər How to pronounce molecular (audio)
: of, relating to, or produced by molecules

Medical Definition

molecular

adjective
mo·​lec·​u·​lar mə-ˈlek-yə-lər How to pronounce molecular (audio)
1
: of, relating to, consisting of, or produced by molecules
molecular oxygen
2
: relating to or emphasizing individual responses or structures of behavior
proceed by more and more detailed analysis to the molecular facts of perceptionG. A. Miller
compare molar entry 3 sense 2
molecularity noun
plural molecularities
molecularly adverb

More from Merriam-Webster on molecular

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